#include <iostream>

using namespace std;

int main()
{
    int n1;
    string n2;

    cin >> n1;
    cin >> n2;

    cout << "n1: " << n1 << endl;
    cout << "n2: " << n2 << endl;
/*
  说明: 这个例子非常典型, 描叙了cin的用法, 上面的代码运行结果如下:
  [输入1]:
    5.2
  [输出1]:
    n1: 5
    n2: .2

  [输入2]:
    5+2
  [输出2]:
    n1: 5
    n2: +2

  [输入3]:
    5+2 3
  [输出2]:
    n1: 5
    n2: +2
*/
    return 0;
}